347 lines
17 KiB
JSON
347 lines
17 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2022-49275",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-02-26T01:49:39.298Z",
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"datePublished": "2025-02-26T01:56:20.066Z",
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"dateUpdated": "2026-08-05T08:54:32.809Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T08:54:32.809Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: m_can: m_can_tx_handler(): fix use after free of skb\n\ncan_put_echo_skb() will clone skb then free the skb. Move the\ncan_put_echo_skb() for the m_can version 3.0.x directly before the\nstart of the xmit in hardware, similar to the 3.1.x branch."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The UAF is in m_can_tx_handler on the ndo_start_xmit/TX work path, reached when a local process sends via AF_CAN (raw_sendmsg → can_send → m_can_start_xmit), not when processing frames received from the CAN bus. Same TX-local scoring as other SocketCAN transmit bugs rather than adjacent bus RX.\nAC:L - On M_CAN IP v3.0.x with CAN_CTRLMODE_FD enabled, every transmit deterministically calls can_put_echo_skb() (which frees the skb) and then can_is_canfd_skb(skb)/cf->flags on the freed pointer; the attacker fully controls when frames are sent and no race is required.\nPR:L - socket(PF_CAN)/bind/sendmsg impose no capability checks, so an unprivileged local user can trigger the path on an already-up m_can interface typical of automotive/industrial deployments; CAP_NET_ADMIN is only needed for bring-up/bitrate, not for TX.\nUI:N - The attacker triggers the UAF solely by sending crafted/ordinary CAN frames on the interface; no separate victim action such as mounting a device or opening a file is required.\nS:U - Impact is use-after-free of a kernel sk_buff within the host SocketCAN/m_can driver under the same OS authority, enabling standard local privilege escalation rather than a VM/IOMMU/sandbox escape.\nC:H - can_put_echo_skb()/can_create_echo_skb() frees the original sk_buff while the TX path still reads skb->len and skb->data; reclaiming that slab object yields a classic UAF read/disclosure primitive scored Confidentiality High.\nI:H - The same sk_buff UAF is heap memory corruption that enables spraying and write/control-flow primitives typical of exploitable kernel use-after-frees, so Integrity is High per UAF guidance even though the immediate post-free accesses are reads.\nA:H - Dereferencing the freed sk_buff in the TX path can oops/panic the kernel (and UAF bugs are scored Availability High even when not fully exploited), fully denying host availability."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/can/m_can/m_can.c"
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],
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"versions": [
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{
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"version": "80646733f11c2e9de3b6339f7e635047e6087280",
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"lessThan": "d93ed9aff64968f4cdad690712eb4f48ae537bde",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "80646733f11c2e9de3b6339f7e635047e6087280",
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"lessThan": "d3892a747ab16b1eb6593a19d29f62c3b3f020ac",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "80646733f11c2e9de3b6339f7e635047e6087280",
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"lessThan": "7728d937ec403a1ceff9483023252d2cb8777f81",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "80646733f11c2e9de3b6339f7e635047e6087280",
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"lessThan": "08d90846e438ac22dc56fc49ec0b0d195831c5ed",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "80646733f11c2e9de3b6339f7e635047e6087280",
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"lessThan": "869016a2938ac44f7b2fb7fc22c89edad99eb9b3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "80646733f11c2e9de3b6339f7e635047e6087280",
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"lessThan": "f43e64076ff1b1dcb893fb77ad1204105f710a29",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "80646733f11c2e9de3b6339f7e635047e6087280",
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"lessThan": "4db7d6f481990dd179a9ee7126dc7aa31ea4fff3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "80646733f11c2e9de3b6339f7e635047e6087280",
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"lessThan": "31417073493f302d26ab66b3abc098d43227b835",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "80646733f11c2e9de3b6339f7e635047e6087280",
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"lessThan": "2e8e79c416aae1de224c0f1860f2e3350fa171f8",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/can/m_can/m_can.c"
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],
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"versions": [
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{
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"version": "3.18",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "3.18",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.9.324",
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"lessThanOrEqual": "4.9.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.14.289",
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"lessThanOrEqual": "4.14.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.19.253",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.207",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.110",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.33",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.16.19",
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"lessThanOrEqual": "5.16.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.17.2",
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"lessThanOrEqual": "5.17.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.18",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.18",
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"versionEndExcluding": "4.9.324"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.18",
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]
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/d93ed9aff64968f4cdad690712eb4f48ae537bde"
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},
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{
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"url": "https://git.kernel.org/stable/c/d3892a747ab16b1eb6593a19d29f62c3b3f020ac"
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},
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{
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"url": "https://git.kernel.org/stable/c/7728d937ec403a1ceff9483023252d2cb8777f81"
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},
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{
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"url": "https://git.kernel.org/stable/c/08d90846e438ac22dc56fc49ec0b0d195831c5ed"
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},
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{
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"url": "https://git.kernel.org/stable/c/869016a2938ac44f7b2fb7fc22c89edad99eb9b3"
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},
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{
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"url": "https://git.kernel.org/stable/c/f43e64076ff1b1dcb893fb77ad1204105f710a29"
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},
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{
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"url": "https://git.kernel.org/stable/c/4db7d6f481990dd179a9ee7126dc7aa31ea4fff3"
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},
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{
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"url": "https://git.kernel.org/stable/c/31417073493f302d26ab66b3abc098d43227b835"
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},
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{
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"url": "https://git.kernel.org/stable/c/2e8e79c416aae1de224c0f1860f2e3350fa171f8"
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}
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],
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"title": "can: m_can: m_can_tx_handler(): fix use after free of skb",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2022-49275",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2025-03-04T18:03:19.289491Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-416",
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"description": "CWE-416 Use After Free"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2025-03-04T18:07:17.587Z"
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}
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}
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]
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}
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} |